E2Manager/handlers/endc_x2setupFailureResponseToProtobuf.go

   1 //
   2 // Copyright 2019 AT&T Intellectual Property
   3 // Copyright 2019 Nokia
   4 //
   5 // Licensed under the Apache License, Version 2.0 (the "License");
   6 // you may not use this file except in compliance with the License.
   7 // You may obtain a copy of the License at
   8 //
   9 //      http://www.apache.org/licenses/LICENSE-2.0
  10 //
  11 // Unless required by applicable law or agreed to in writing, software
  12 // distributed under the License is distributed on an "AS IS" BASIS,
  13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 // See the License for the specific language governing permissions and
  15 // limitations under the License.
  16 //
  17
  18 package handlers
  19
  20 // #cgo CFLAGS: -I../asn1codec/inc/  -I../asn1codec/e2ap_engine/
  21 // #cgo LDFLAGS: -L ../asn1codec/lib/ -L../asn1codec/e2ap_engine/ -le2ap_codec -lasncodec
  22 // #include <asn1codec_utils.h>
  23 // #include <x2setup_response_wrapper.h>
  24 import "C"
  25 import (
  26         "e2mgr/logger"
  27         "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
  28         "unsafe"
  29 )
  30
  31 // Populate and return the EN-DC/X2 setup response failure structure with data from the pdu
  32 func endcX2SetupFailureResponseToProtobuf(pdu *C.E2AP_PDU_t) (*entities.SetupFailure, error) {
  33         setupFailure := entities.SetupFailure{}
  34
  35         if pdu.present == C.E2AP_PDU_PR_unsuccessfulOutcome {
  36                 //dereference a union of pointers (C union is represented as a byte array with the size of the largest member)
  37                 unsuccessfulOutcome := *(**C.UnsuccessfulOutcome_t)(unsafe.Pointer(&pdu.choice[0]))
  38                 if unsuccessfulOutcome != nil && unsuccessfulOutcome.value.present == C.UnsuccessfulOutcome__value_PR_ENDCX2SetupFailure {
  39                         endcX2SetupFailure := (*C.ENDCX2SetupFailure_t)(unsafe.Pointer(&unsuccessfulOutcome.value.choice[0]))
  40                         if endcX2SetupFailure != nil && endcX2SetupFailure.protocolIEs.list.count > 0 {
  41                                 count:=int(endcX2SetupFailure.protocolIEs.list.count)
  42                                 endcX2SetupFailure_IEs_slice := (*[1 << 30]*C.ENDCX2SetupFailure_IEs_t)(unsafe.Pointer(endcX2SetupFailure.protocolIEs.list.array))[:count:count]
  43                                 for _, endcX2SetupFailure_IE := range endcX2SetupFailure_IEs_slice {
  44                                         if endcX2SetupFailure_IE != nil {
  45                                                 switch endcX2SetupFailure_IE.value.present {
  46                                                 case C.ENDCX2SetupFailure_IEs__value_PR_Cause:
  47                                                         causeIE := (*C.Cause_t)(unsafe.Pointer(&endcX2SetupFailure_IE.value.choice[0]))
  48                                                         err := getCause(causeIE, &setupFailure)
  49                                                         if err != nil {
  50                                                                 return nil, err
  51                                                         }
  52                                                 case C.ENDCX2SetupFailure_IEs__value_PR_TimeToWait:
  53                                                         setupFailure.TimeToWait = entities.TimeToWait(1 + *((*C.TimeToWait_t)(unsafe.Pointer(&endcX2SetupFailure_IE.value.choice[0]))))
  54                                                 case C.ENDCX2SetupFailure_IEs__value_PR_CriticalityDiagnostics:
  55                                                         cdIE := (*C.CriticalityDiagnostics_t)(unsafe.Pointer(&endcX2SetupFailure_IE.value.choice[0]))
  56                                                         if cd, err := getCriticalityDiagnostics(cdIE); err == nil {
  57                                                                 setupFailure.CriticalityDiagnostics = cd
  58                                                         } else {
  59                                                                 return nil, err
  60                                                         }
  61                                                 }
  62                                         }
  63                                 }
  64                         }
  65                 }
  66         }
  67
  68         return &setupFailure, nil
  69 }
  70
  71 func unpackEndcX2SetupFailureResponseAndExtract(logger *logger.Logger, allocationBufferSize int, packedBufferSize int, packedBuf []byte, maxMessageBufferSize int) (*entities.SetupFailure, error) {
  72         pdu, err := unpackX2apPdu(logger, allocationBufferSize, packedBufferSize, packedBuf, maxMessageBufferSize)
  73         if err != nil {
  74                 return nil, err
  75         }
  76
  77         defer C.delete_pdu(pdu)
  78
  79         return endcX2SetupFailureResponseToProtobuf(pdu)
  80 }